Folding square.



No. 882,130. PATENTED MAR. 17, 1908.

A. G. URBAN. FOLDING SQUARE AAAAAAAAAA N FILED 001225, 1901.

UNITED stml ss grnnr OFFICE.

ALBERT G. URBAN, OF JOHNSTOWN, PENNSYLVANIA.

FOLDING SQUARE T 0 all whom it may concern:

Be it known that I, ALBERT G. URBAN, a citizen of the United States,residing at Johnstown, in the county of Cambria and State ofPennsylvania, have invented certain new and useful Improvements inFolding Squares, of which the following is a specification, referencebeing had to the accompanying drawings.

My invention relates to improvements in folding squares and consists ofthe novel features of construction and the combination and arran ernentof parts hereinafter described an claimed.

The object of the invention is to provide a folding square of simple,strong, durable and inexpensive construction in which one of its bladesor arms may be readily set at right angles or at an angle of 45 degreesto its other arm and also folded parallel with the same to permit thedevice to be placed in a small tool chest.

The above and other objects are attained in the preferred embodiment ofthe invention illustrated in the accompanying drawin s in which igure 1is a perspective view of my im proved folding square showing its bladesor arms set at right angles to each other; Fig. 2 is a side elevationpartly in section showing the blades or arms set at an angle of 45degrees to each other Fig. 3 is a view similar to Fig. 2 showing theblades or arms folded together in parallel relation; and Fig. 4 is adetailed section taken on the plane indicated by the line 44 in Fig. 3.

My improved folding square comprises two arms 1, 2, the former of whichI will termthe body and the latter of which the blade. These parts maybe of any desired form and construction and may be provided upon one orboth of their faces with scales of any description. At the inner end ofthe body 1 is provided a ri ht angularly projecting exten sion 3 whichas its opposite faces cut away to provide a reduced tongue 4 and angularshoulders 5. The shoulders 5 are disposed at an angle of 45 degrees withrespect to the parallel edges of the body 1 and since both faces of theupper end of the latter are recessed or cut away to provide the tongue 4one of said shoulders is disposed upon each side of the body. Theshoulders 5 extend from the inner edge of the body to projections 6formed by leaving the said faces of Specification of Letters Patent.

Application filed October 25, 1907.

Patented March 17, 1908.

Serial No. 399,174.

the body at the upper and inner end of the tongue 4. These projections 6are of rectangular form and together with the shoulders 5 provideV-shaped notches or seats 7 for a purpose presently explained. In thetongue or projection 4 is formed an irregular shaped slot 8 consistingof a plurality of communicating branches 9,10, 11, 12, 13 and having anentrance at the outer end of the extension or tongue as shown. The slot8 is adapted to receive pins carried by the blade 2 and in its severalbranches are arranged seats 14, 15, 16, 17, 18 for a purpose presentlyexplained. V l

The blade 2 has its inner end beveled as shown at-19 and formed with atransverse opening or slot 20 adapted to receive the tongue 4. Theextremity of the beveled end of the blade is formed with recesses 21adapted to receive the projections 6 on the body and to provide V-shapedprojections 22 adapted to enter the similar shaped recesses or seats 7in the body when the body and blade are at right angles to each other asshown in Fig. 1. Extending transversely across the opening 20 in thebeveled end of the blade are two pins 23, 24 preferably in the form ofscrews which have their heads 25 countersunk upon one side of the bladeand their threaded ends 26 engaged with threaded openings in theopposite side of the same, as clearly shown in Fig. 4.

The provision of the irregular shaped slot 8 in the tongues 4 and thetwo pins 23, 24 in the blade permit the body and blade to be readilyconnected and disconnected and also folded into parallel relation andadjusted at angles of 90 or 45 degrees with respect to each other, aswill be readily understood uponreference to the drawings. 1

WVhen it is desired to connect the two arms or members of the device,the tongue 4 is inserted in the slot 20 and the pins 23, 24 aresuccessively forced into the branch 9 of the slot 8. The pin 23 is thenmoved up into the branch 10 and the blade is then swung to cause the pin24 to pass through the branch 11 and into the branch 12 or the branch13. When the pin 24 is engaged with the seat 18 at one end of the branch13 and the pin 23 is dis osed in the branch 9 the blade and body will beparallel to each other and in their folded position shown in Fig. 3.When it is desired to set the blade at right angles to the body theformer is swung outwardly with the broken.

pin 24 as a fulcrum unt'ilthe pin 23 passes through the branches 9, 11and into the branch 12, it being noted that the branch 9. is curved orare shaped and concentric with the seat 18. When the pin 23 enters thebranch 12 the blade will be at right angles to the body and it is thenmoved inwardly toward the same so that the pins 23, 24 respectivelyengage the seats 14, 15 and the projections 22 enter the seats orrecesses 7, whereupon the two arms or blades of the square will berigidly held at right angles to each other. When it is desired to setthe blade at an angle 45 degrees with respect to the body so as toobtain a miter cut, the blade is manipulated to bring the pins 23, 24into' the parallel branches 10, 12 of the slot whereupon the blade ismoved outwardly to cause the pins to respectively engage the seats 16,17 and to cause the inner edge of the blade to engage the shoulders 5 ofthe body. When the members -are thus adjusted, as shown in Fig. 2, theywill be rigidly held or locked owing to their peculiar construction.

From the foregoing it will be noted that my improved folding square isexceedingly simple, in construction so that it may be produced at asmall cost and will be strong and durable and not liable to be readilyIt will also be noted that it may be conveniently adjusted to positionits parts at different angles and that no fastening devices are requiredto hold the parts adjusted.

Having thus described my invention what I claim is:

1. A folding square, comprising a body.

formed at one end with a tongue, a diagonally arranged shoulder and aseat, said tongue being formed with the irregular shaped slot H havingthe communicating branches 9, 10, 11, 12, 13 and an entrance at theouter end of the tongue,'said branches being formed with the seats 14,15, 16, 17, 18, a blade having one end slotted to receive the tongue andbeveled to engage said shoulder, said. end of the blade being alsoprovided with a projection to engage the first mentioned seat upon thebody, and the transverse pins 23, 24 arranged in the slotted end of theblade and adapted to enter the slot in the tongue and to engage saidseats in the branches of said slot, substantially as and for the purposeset forth.

2. A folding square comprising a body having at one end an extensionprovided with recessed faces to form a tongue, the

ends of said shoulders, a blade having its in-.

ner end beveled and formed with a slot to receive said tongue, theextremity of said end of the blade being cut away to provide pro-,jections to enter the seats or notches at the ends of the shouldersupon the body, and transverse pins arranged in the slot or opening inthe blade and adapted to enter the slot in said tongue and to engagesaid seats in the slot, substantially as and for the purpose set forth.

3. A folding, square comprising a body formed with an extension havingits opposite faces reduced to provide a tongue, the shoulders 5 and theseats 7, said tongue being formed with a slot having the seats 14, 15, ablade having a beveled end formed with a slot or opening to receive thetongue and with projections on said beveled end to engage the seats 7,the beveled edges of said end being adapted to engage the shoulders 5,

and transverse pins in said end of the blade adapted to enter the slotin the ton ue and to engage the seats 14, 15, substantially as and forthe purpose set forth.

4. A folding square comprising a body having an extension reduced toprovide a tongue and an inclined shoulder, said tongue being formed witha slot having the seats 16, 17, a blade having a beveled end formed witha slot to receive the tongue, and transverse pins in said blade to enterthe slot in the tongue and to engagesaid seats 16, 17, the edge of saidblade being adapted to engage the shoulder 5, substantially as and forthe purpose set forth.

In testimony whereof I hereunto afiix my signature in the presence oftwo witnesses.

ALBERT G. URBAN. Witnesses:

A. J. BowIE, D. F. COLLINS.

